Cavity pressure behavior in micro injection moulding

Griffiths, Christian Andrew, Dimov, Stefan Simeonov, Scholz, Steffen Gerhard, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Tosello, G., Hansen, H. N. and Williams, Eleri 2011. Cavity pressure behavior in micro injection moulding. Presented at: 4M2010: 7th International Conference on Multi-Material Micro Manufacture, Oyonnax, France, 17-19 November 2010. Published in: Fillon, B., Khan-Malek, C. and Dimov, Stefan Simeonov eds. Proceedings of the 7th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, 10.3850/978-981-08-6555-9_164

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Abstract

Process monitoring of micro injection moulding (µIM) is of crucial importance to analyse the effect of different parameter settings on the process and to assess its quality. Quality factors related to cavity pressure can provide useful information directly connected with the dynamics of the process as well as with the filling of the cavity by the polymer melt. In this paper, two parameters derived from cavity pressure data collected by a pressure sensor have been defined: pressure increase rate during filling and the integral of pressure over time (i.e. pressure work). The influence of four µIM parameters (melt temperature, mould temperature, injection speed, and packing pressure) on the two pressure-related outputs has been investigated by moulding a micro fluidic component on three different polymers (PP, ABS, PC) using the design of experiment approach. Similar trends such as the effects of a higher injection speed in decreasing the pressure work and of a lower mould temperature in decreasing pressure rate have been found for all three materials.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Business (Including Economics) Engineering
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures
Uncontrolled Keywords:	Micro injection moulding, Process monitoring, Cavity injection pressure
Publisher:	Research Publishing
ISBN:	9789810865559
Last Modified:	08 Feb 2023 07:18
URI:	https://orca.cardiff.ac.uk/id/eprint/38293

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